[115] See Part I. p. 161.
[116] "Der menschliche Wille," p. 13.
[117] On the Motions of the Tendrils of Plants; among the essays of Knight published under the title, "A Selection from Physiological and Horticultural Papers," 1841.
[118] See "Insectivorous Plants," Chaps. I. and II.
[119] "The Movements of Plants," Chap. III.
[120] See experiments made by Eimer: "Entstehung der Arten," etc., p. 263 et seq.
[121] E. Pflüger: "Die sensorischen Functionen des Rückenmarks der Wirbelthiere," 1853.
[122] See Lange: "Geschichte des Materialismus," II. Theil, p. 486.
[123] "The Science of Ethics," p. 60.
[124] "Der thierische Wille," p. 161.